Clarification: I normally physically log on to and play media on host A using mpv, displaying the video on an external monitor HDMI-A-2 and playing the audio from host A’s headphone jack connected to external speakers. Today, I tried not physically logging on to host A, but remotely logging in from host B (my phone) using ssh from the same network and running the mpv command from host B. mpv then displays the video on the expected display HDMI-A-2, but it doesn’t play any audio.
Symptomatically, if I haven’t logged on physically to host A, mpv only displays video, plays no audio and throws errors. Why do I need to be physically logged on to host A for mpv to be able to access audio? You’d think a video feed would be more guarded than an audio one. But maybe this isn’t about security at all? Please enlighten me! 😊
Hard to figure out what you’re trying to accomplish.
Are you using x11 forwarding? X11 doesn’t touch audio, so x11 forwarding itself won’t work, you’ll have to tunnel the whole stream.
And if you get that to work, you’ll have reinvented https streaming. It’s so much simpler to just use a local client to connect to remote resources, or make the stream available in a protocol meant for streaming media, like rtsp or das.